Red cell distribution width and chronic heart failure: prognostic role beyond echocardiographic parameters

Area of Science:

• Cardiology
• Clinical Medicine
• Biomarkers

Background:

• Red cell distribution width (RDW) indicates anisocytosis and is linked to adverse outcomes in various conditions, including chronic heart failure (HF).
• Echocardiographic parameters are standard for assessing HF prognosis.

Purpose of the Study:

• To compare the prognostic value of RDW with echocardiographic parameters in chronic HF patients.
• To determine if RDW can independently predict adverse cardiovascular events in this population.

Main Methods:

• 32 stable chronic HF patients were enrolled, excluding those with valvular diseases or atrial fibrillation.
• Patients underwent blood sampling for RDW and echocardiographic examination.
• The primary endpoint was cardiovascular death and/or HF hospitalization within one year.

Main Results:

• 49 patients reached the primary endpoint. The optimal RDW cut-off was 14.45%.
• Univariate analysis identified mitral regurgitation, LVEF, PWT, LV mass index, and RDW > 14.45% as predictors.
• Multivariate analysis confirmed LVEF, PWT, and RDW > 14.45% as independent predictors. RDW showed a comparable Area Under the ROC Curve (0.761) to NYHA class (0.762) and LVEF (0.808).

Conclusions:

• RDW is a superior predictor of adverse outcomes in chronic HF patients compared to several echocardiographic parameters.
• RDW provides prognostic information independently of other clinical and echocardiographic factors.
• RDW can enhance the monitoring and risk assessment of chronic HF patients.